R600/SI: Promote fp64 SELECT to i64

This type promotion is replacing a Tablegen pattern and it is already
covered by existing tests.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@204617 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/lib/Target/R600/SIISelLowering.cpp b/lib/Target/R600/SIISelLowering.cpp
index fd1e3a6..47376b4 100644 (file)
--- a/lib/Target/R600/SIISelLowering.cpp
+++ b/lib/Target/R600/SIISelLowering.cpp
@@ -104,6 +104,8 @@ SITargetLowering::SITargetLowering(TargetMachine &TM) :
   setOperationAction(ISD::STORE, MVT::v4i32, Custom);
 
   setOperationAction(ISD::SELECT, MVT::i64, Custom);
+  setOperationAction(ISD::SELECT, MVT::f64, Promote);
+  AddPromotedToType(ISD::SELECT, MVT::f64, MVT::i64);
 
   setOperationAction(ISD::SELECT_CC, MVT::f32, Custom);
   setOperationAction(ISD::SELECT_CC, MVT::i32, Custom);

diff --git a/lib/Target/R600/SIInstructions.td b/lib/Target/R600/SIInstructions.td
index eb10541..8ec2971 100644 (file)
--- a/lib/Target/R600/SIInstructions.td
+++ b/lib/Target/R600/SIInstructions.td
@@ -904,18 +904,6 @@ def : Pat <
   (EXTRACT_SUBREG $val, sub0)
 >;
 
-//use two V_CNDMASK_B32_e64 instructions for f64
-def : Pat <
-  (f64 (select i1:$src2, f64:$src1, f64:$src0)),
-  (INSERT_SUBREG (INSERT_SUBREG (f64 (IMPLICIT_DEF)),
-  (V_CNDMASK_B32_e64 (EXTRACT_SUBREG $src0, sub0),
-                     (EXTRACT_SUBREG $src1, sub0),
-                     $src2), sub0),
-  (V_CNDMASK_B32_e64 (EXTRACT_SUBREG $src0, sub1),
-                     (EXTRACT_SUBREG $src1, sub1),
-                     $src2), sub1)
->;
-
 def V_READLANE_B32 : VOP2 <
   0x00000001,
   (outs SReg_32:$vdst),